| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10241333 | Applied Catalysis B: Environmental | 2005 | 8 Pages |
Abstract
The electrocatalysis of the oxygen reduction reaction on carbon supported Pt and Pt-Co (Pt/C and Pt-Co/C) alloy electrocatalysts was investigated in sulphuric acid (both in the absence and in the presence of methanol) and in direct methanol fuel cells (DMFCs). In pure sulphuric acid Pt-Co/C alloys showed improved specific activity towards the oxygen reduction compared to pure platinum. In the methanol containing electrolyte a higher methanol tolerance of the binary electrocatalysts than Pt/C was observed. The onset potential for methanol oxidation at Pt-Co/C was shifted to more positive potentials. Accordingly, Pt-Co/C electrocatalyts showed an improved performance as cathode materials in DMFCs.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
José Ricardo Cezar Salgado, Ermete Antolini, Ernesto Rafael Gonzalez,